Electroplate attachment



(No Model.)

G. KEGK.

ELEOTROPLATE ATTACHMENT. No. 476,653. Patented June 7, 1892.

Unrrnn ra'rns ATENT rricn,

CHRISTIAN KECK, OF CINCINNATI, OHIO.

ELECTROPLATE ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 476,653, dated June '7, 1892.

Application filed December 22, 1891. $erial No, 415,921. (No model.)

To (LZZ whom it may concern;

Be it known that I, CHRISTIAN KECK,a citizen of the United States, residing at Cincinnati, in the county of Hamilton andState of Ohio, have invented certain new and useful Improvements in Electroplate Attachments, of which the following is a specification.

My invention relates to a cylinder-press.

The object of my invention is to provide a cylinder to which electroplates can be readily attached and removed, avoiding the necessity of soldering, and various advantages are derived from the use of my invention: First, the plates can be quickly put on and taken off; second, they can be justified or aligned more easily than plates which have to be attached by solder, as they are readily adjustable.

Another advantage derived is that a true cylinder can be obtained, and hence a more uniform impression received. 7

Another advantage of my invention is that it admits electrotypes to be employed for printing books where true forms or perfect justification are required.

The various features of my invention are fully set forth in the description of the accompanying drawings, making a part of this specification, in which Figure l is a sectional plan view of a cylinder, showing two plates in position and a blank space for two or more plates. Fig. 2 is a section on line y 3 Fig. 1. Fig. 3 is a section on line a :0, Fig. 1. Fig. 4 is a perspective view of the clamping-strips.

1 represents a cylinder made of cast metal and turned up. 2 represents longitudinal grooves formed in the face of the cylinder, in which are placed the guide-blocks 3 a. Guideblocks 3 occupy central positions in the grooves 2 and are beveled at either edge to engage in the supporting-cylinder. The guideblocks 4 are beveled only on one edge, as they are end blocks. These end blocks are held in position by screws 5, which pass through the rim 6 on the end of the cylinder, as shown in Fig. 2. The opposite end of the cylinder is a duplicate of the end shown therein.

7 represents a set-bolt for holding said annular rim 6 in place on the cylinder.

8 represents cylindrical segments, which are pierced with a slot 9 in the center to receive a clamp-bolt 10, which lies below the surface, as

shown in section, 2. These segments are preferably provided with dovetail ribs ll at both ends and are recessed to receive the elect-roplates A. The ends of these electroplates are beveled to fit the ribs 11. The segmentplates 8 are turned to a true circle, and the stereotype-plates A are made on the same circle and rest thereon. They are secured in position on one side by means of the fastenerstrip 13, and they are supported at their outer ends by the ribs 11. They are held in position endwise by the clamps B, which are segments fitting upon the cylinder and sliding in the groove 9.

10 represents a right and lefthand screw, which engages, respectively, with the clamps B B, as shown in Fig. 2. As this right and left screw is driven to force the clamps B B apart it forces the stereotype-plates up against the ribs 11. These plates rest firmly against the fastening-strips 13 upon one side and against the clamps B and rib 11 at the ends thereof. Thus the plates are firmly supported by the engagement on three sides. The fourth side, being in the direction of rotation, has no tendency to displacement.

14: represents fastening-strips for a second set of stereotype-plates, which are attached in the same manner as the plates A A. Between the strips 14 and the plates A A is a space a, which allows the stereotype-plate, when the clamps B Bare released, to be readily moved laterally and lifted out and another one put in its place, the support upon three sides of the stereotype-plate being sufficient to hold it in position, and yet allow it to be readily taken out. Packin strips may be used at the edges or sides of these stereotype-plates to bring them into desired line, either vertical or lateral, and a perfectadjustification is secured. By means of the construction herein shown and described the stereotype-plates can be adjusted upon the cylinder in accurate form, so that books which require perfect spacing and j ust-ification can be readily printed from electroplates. Besides, the electroplates are readily interchangeable and a true cylinder is readily obtained.

A modification of this device will be to omit the ribs 11 and allow the plates to rest against the fixed block 4 and also to omit strips 13 and abut the plates against the filling-strips 16;

TOO

but I prefer to employ the strips 13 and have them attached directly to the segment-plates 8, so as to be removed therewith Having described my invention, What I claim is 1. The combination, With the cylinder of a printing-press, of the segmental plate secured to the face thereof and having slots formed therein, clamping devices located in the slots, means for spreading said clamping devices, and retaining devices co-operating with the clamping devices, substantially as and for the purpose set forth.

The combination, with the cylinder of a printing-press, of a series of segmental plates secured to the face of the cylinder and having slots and end ribs to engage stereotype-plates, clamping devices arranged in the slots of the segmental plates, and means for spreading the clamps, substantially as described.

3. The combination, with the cylinder of a printing-press, of a series of segmental plates secured to the face of the cylinder and provided with ribs 11, the beveled stereotypeplates, clamping devices arranged on the segmental plates for forcing the stereotype-plates into engagement with the ribs, and means for operating the clamping devices, substantially as described.

4. The combination, with the cylinder of a printing-press, of a series of segmental plates 8, secured to the face of the cylinder and provided with central slots 9, the clamps B B, located in the slots, the screw 10, connecting the clamps and operating to spread the same, the stereotype-plates A A, mounted on the segmental plates, and retaining devices cooperating With the clamping devices to retain the stereotype-plates in position, substantially as described.

In testimony whereof I have hereunto set my hand.

CHRISTIAN KECK.

\Vii n esses:

'1. SIMMONS, EDWARD Born. 

